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首页> 外文会议>Clearwater clean coal conference;International technical conference on clean energy >IMPACTS OF CO-FIRING REFUSE DERIVED FUEL (RDF) IN ROTARY CEMENT KILNS: NUMERICAL INVESTIGATION WITH ADVANCED FLIGHT AND COMBUSTION MODELS FOR RDF
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IMPACTS OF CO-FIRING REFUSE DERIVED FUEL (RDF) IN ROTARY CEMENT KILNS: NUMERICAL INVESTIGATION WITH ADVANCED FLIGHT AND COMBUSTION MODELS FOR RDF

机译：共烧垃圾衍生燃料（RDF）在回转水泥窑中的影响：RDF的高级飞行和燃烧模型的数值研究

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This paper presents CFD-simulations of an industrial scale rotary kiln for cement clinker production. The fuel for the kiln flame is a mixture of pulverized coal and a Refuse derived Fuel (RDF). Advanced models were developed to appropriately describe the thermal conversion characteristics and aerodynamics of non-spherical RDF particles. The models are based on detailed fuel analyses (e.g. flight and combustion characteristics, physical and chemical fuel properties) of major RDF fractions, like plastic foils, 3D plastic particles, paper & card board and textiles. The processes in the clinker within the kiln are approximated using a simplified one-dimensional model that calculates heat- and mass-exchange with the gas phase and the resulting chemical-mineralogical reactions in the solid bed. Based on the simulation results, the shift of flame shape and fuel conversion as well as the resulting effects on the clinker phase transition are analysed and discussed.
机译：本文介绍了用于水泥熟料生产的工业规模回转窑的CFD模拟。窑炉火焰的燃料是煤粉和垃圾衍生燃料（RDF）的混合物。开发了高级模型以适当地描述非球形RDF颗粒的热转化特性和空气动力学。这些模型基于主要RDF馏分的详细燃料分析（例如飞行和燃烧特性，物理和化学燃料特性），例如塑料箔，3D塑料颗粒，纸和纸板和纺织品。使用简化的一维模型来估算窑内熟料中的过程，该模型可计算与气相的热交换和质量交换，以及在固相床中发生的化学-矿物反应。基于仿真结果，分析和讨论了火焰形状和燃料转化的变化以及其对熟料相变的影响。

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